Boosting the optical and gamma-ray shielding features of borate glasses by doping with various concentrations of yttrium and samarium oxides

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-09-25 DOI:10.1016/j.materresbull.2025.113807

Aljawhara H. Almuqrin , Chaitali V. More , Shrikant Biradar , K.A. Mahmoud , M.I. Sayyed

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Abstract

This study investigates borate glass enhanced with PbO₂ and rare-earth dopants Y₂O₃ and Sm₂O₃ for dual optical and γ-ray shielding purposes. Increasing the PbO₂+Y₂O₃+Sm₂O₃ content increased the density (3.937–4.536 g/cm³) and molar volume (25.929–26.529 cm³/mol), while leading to a 3.126 to 2.931 eV optical direct band gap reduction and a 2.764 to 2.529 eV indirect band gap reduction, and raising the refractive index (2.443–2.503). The γ-ray shielding performance was evaluated via linear attenuation coefficients (LACs), effective atomic numbers (Z_eff), and radiation protection efficiencies (RPEs) across 0.015–10 MeV. The highest doped glass (YSm1.0) showed LAC reductions of 98.3 % (photoelectric) and 93.41 % (Compton), outperforming RS 253. Increased dopant levels also raised density (3.937–4.536 g/cm³), Z_eff (53.891–60.572), and RPEs (80.233–90.723 % at 0.2 MeV). Greater thickness enhanced shielding, with RPEs increasing from 6.878 % to 57.479 % at 1 MeV (0.25–3 cm). These results confirm YSm-doped glasses as promising materials for radiation shielding and optical applications.

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通过掺杂不同浓度的钇和钐氧化物来增强硼酸盐玻璃的光学和伽马射线屏蔽特性

本研究研究了用PbO2和稀土掺杂剂Y2O3和Sm2O3增强硼酸盐玻璃的双光学和γ射线屏蔽目的。PbO2+Y2O3+Sm2O3含量的增加增加了材料的密度（3.937 ~ 4.536 g/cm3）和摩尔体积（25.929 ~ 26.529 cm3/mol），光学直接带隙减小3.126 ~ 2.931 eV，间接带隙减小2.764 ~ 2.529 eV，并提高了材料的折射率（2.443 ~ 2.503）。在0.015-10 MeV范围内，通过线性衰减系数（LACs）、有效原子序数（Zeff）和辐射防护效率（RPEs）来评估其γ射线屏蔽性能。最高掺杂玻璃（YSm1.0）的LAC降低了98.3%（光电）和93.41%（康普顿），优于RS 253。在0.2 MeV下，掺杂量的增加也会提高密度（3.937 ~ 4.536 g/cm3）、Zeff（53.891 ~ 60.572）和rpe（80.233 ~ 90.723%）。在1 MeV （0.25-3 cm）下，rpe从6.878%增加到57.479%，厚度增加增强了屏蔽效果。这些结果证实了ysm掺杂玻璃作为辐射屏蔽和光学应用的有前途的材料。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.